Question $4-$ The following table shows the size of bike parts in $cm.$

$\backslash$table$[[,$Sample number$],[,1,2,2,3],[$Observation $1,14,15,11,17],[$Observation $2,11,16,30,16],[$Observation $3,13,12,17,18]]$

$(1)$ Calculate all the proper control limits$.(5)$